7 results
Henoch Schonlein Leg Rash - Palpable Purpura
Purpura: Low Platelets or Vasculitis?
45 years old, seen in our
Leg Rash - Palpable ... Tip: To differentiate ... later confirmed by skin ... #photo #dermatology ... #HSP
Moccasin-variety Tinea Pedis 
70 M chronic scaly feet. Over the years: rash has itched only occasionally;
Over the years: rash ... rubrum is most commonly ... Moccasin tinea pedis ... skin of inflamed ... #foot #dermatology
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential ... infection - RMSF - Henoch ... : - Autoimmune ... cryoglobulins • Skin ... Algorithm #Causes #dermatology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
fires, heating pads ... or trunk most commonly ... • Most commonly ... comparison #table #differential ... #diagnosis #dermatology
Common Dermatological Conditions - Distribution and Morphology
 • Acne vulgaris - Face, upper back, chest -
Common Dermatological ... Ankles, lower legs ... with site, (e.g„ tinea ... ; pruritis #dermatology ... #rash #differential
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
arthralgia, arm/leg ... Nodosa: • PAN most commonly ... , mucositis • Rash ... often present) Henoch ... purpura (lower legs
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
- Differential ... ) • Anti-Mi2 (skin ... Symptoms: • Gottron rash ... weakness + atrophy- Hip ... #rheumatology #differential